Objective: To compare loss of ovarian parenchyma following ovarian endometrioma ablation
using the PlasmaJet system versus cystectomy, using postoperative examination by 3D
Design: Prospective comparative study. Setting: Two experienced surgeons practicing in two
University tertiary referral centers.
Patients: Fifty women with no previous history of ovarian surgery managed for unilateral
ovarian endometrioma > 30 mm in diameter.
Interventions: Endometrioma ablation by plasma energy using the PlasmaJet system and ovarian
tissue sparing cystectomy.
Main Outcome Measures: 3D ultrasound assessment of postoperative reduction in ovarian volume
and antral follicle count (AFC) .